The European Commission asked EFSA to provide a scientific opinion on the request for a modification of the EU specifications for polyvinyl alcohol-polyethylene glycol--co-polymer (PVA-PEG -co-polymer) (E 1209) and its possible impact on the safety. In accordance with Annex II to Regulation (EC) No 1333/2008, PVA-PEG -co-polymer (E 1209) has a single authorisation for use as a food additive in the EU, in the food category food supplements in solid form. According to the current EU specifications, ethylene glycol and diethylene glycol can be present as impurities in other food additives authorised in the EU, namely in polysorbates (E 432-436) and polyethylene glycol (E 1521). The exposure to ethylene glycol and diethylene glycol from their presence in E 1209 and in the other food additives was estimated considering the maximum limit permitted according to the EU specifications and the new proposed maximum limit in E 1209 of 620 mg/kg for the ethylene glycol individually or in combination with diethylene glycol in E 1209. This proposed request would result in a total exposure from food additive uses below the group tolerable daily intake (TDI) of 0.5 mg/kg body weight (bw) per day allocated by the Scientific Committee on Food (SCF) for these contaminants. Therefore, the Panel concluded that the requested amendment of the EU specifications for E 1209 would not result in a safety concern. The Panel noted that the analytical results provided were consistently and considerably lower (up to 360 mg/kg) than the proposed level of 620 mg/kg for ethylene glycol individually or in combination with diethylene glycol in the EU specifications for E 1209.
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http://dx.doi.org/10.2903/j.efsa.2017.4865 | DOI Listing |
ACS Macro Lett
January 2025
Institute for Molecules and Materials, Radboud University, Heyendaalseweg 135 6525 AJ, Nijmegen, The Netherlands.
Lactide, possessing two stereocenters and thus three distinct configurations (DD, DL, and LL), serves as a captivating building block for polymers and self-assembly. Notably, polylactide (PLA) exhibits stereocomplexation, displaying heightened interactions between different configurations compared with interactions within the same configuration. This characteristic renders PLA an intriguing subject for investigating self-assembly behavior.
View Article and Find Full Text PDFJ Pharm Anal
December 2024
Institute of Infectious Disease and Infection Control, Jena University Hospital, Jena, 07747, Germany.
In our prior research, polymer nanoparticles (NPs) containing tobramycin displayed robust antibacterial efficacy against biofilm-embedded () and (. ) cells, critical pathogens in cystic fibrosis. In the current study, we investigated the deposition of a nanoparticulate carrier composed of poly(d,l-lactic--glycolic acid) (PLGA) and poly(ethylene glycol)--PLGA (PEG-PLGA) that was either covalently bonded with cyanine-5-amine (Cy5) or noncovalently bound with freely embedded cationic rhodamine B (RhB), which served as a drug surrogate.
View Article and Find Full Text PDFKidney Dis (Basel)
November 2024
Department of Geriatric Urology, Xiangya International Medical Center, Xiangya Hospital, Central South University, Changsha, PR China.
Introduction: This study aims to explore the contribution of neutrophil extracellular traps (NETs) to kidney stones.
Methods: The microarray data from GSE73680 and bioinformatic analysis were applied to identify differentially expressed genes in patients with kidney stones. A rat model of kidney stones was established through ethylene glycol and ammonium chloride administration.
RSC Adv
January 2025
Dept. of Chemical Engineering, McGill University 3610 Rue Universite Montreal QC H3A 0C5 Canada
Compositions of ethylene glycol dicyclopentenyl ether methacrylate (EGDEMA), a vegetable oil based alkyl methacrylate (C13MA), and furfuryl methacrylate (FMA) were terpolymerized for dual-crosslinked networks with tailored mechanical and thermal properties. Specifically, initiators for continuous activator regeneration (ICAR) atom transfer radical polymerization (ATRP) afforded materials with tailored glass transition temperature ( ) and incorporation of furan and norbornene functionalities within a single chain. The terpolymer with high furan and norbornene functionality (Ter2: = 0.
View Article and Find Full Text PDFRSC Adv
January 2025
School of Petrochemical Engineering, Shenyang University of Technology Liaoyang 111003 China
A sunflower seed shell matrix catalyst (SMS-750) was prepared from sunflower seed shell waste by pretreatment and pyrolytic carbonization. A series of characterization analyses showed that the prepared catalyst was rich in Ca, Mg, K, and other mineral elements and mainly existed in the form of metal oxides. SMS-750 was used to catalyze the glycolysis of waste PET, and the main factors affecting the BHET yield were screened out by a one-way experimental design, and then the BHET yield was used as the response value, and the response surface method was used to design and analyze the effects of the respective variables and their interactions on the degradation of PET according to the principle of Box-Behnken central combinatorial design.
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